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Old 21-03-2015, 18:58   #17
Wittmann
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Re: Down the Plughole

Quote:
Originally Posted by Matth View Post
Condensing what I found in passing... coriolis effect applies under laboratory controlled conditions, but in real life other perturbations are likely to start the rotation in one direction or the other.
In a sink, bath or anything with a plug, the removal of the plug will most certainly start a vortex disturbance, by simple volume displacement and if the plug tilts, which it always does, you get a paddle effect created by the upward pull and hence a rotating vortex.

Bang goes the rather likeable myth.
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